LOL, and that file was over 40gb to download! I wonder how many days it took? Sure must be a bummer to go through all that hassle to download a corrupt torrent.
well according to the error, it says to "contact software manufacturer for assistance" Have you contacted apple?
Unless everyone here is right and you are running a pirated version(bad mistake) you should contact apple about this error. They are good with helping out with these problems...unless of course your copy is ILLEGAL!